Searching for a job can be a daunting task. There are literally THOUSANDS of books and related materials on the subject. With a lot of advice about what TO DO, job search mistakes are still very common. Here are some costly, and common, job search mistakes:

Having Only One Resume – There are no one-size-fits-all resumes. If you use a single resume for your job search, you are making a big mistake! Resumes are usually glanced over very quickly to pick those candidates selected for interviews. It is critically important for you to target your resume to the specific company/job. A bit of minor tweaking can often make the difference between getting the interview, or not. Refer to my earlier post on how to target your resume here.

Applying Online – this is a classic job search mistake to avoid. The main reason is because it is what everybody else is doing! It is very easy to get lost in flood of applicants who apply indiscriminately online. Second, many recruiters hold the belief that top-notch candidates don’t apply online. Top candidates are either sought out, or come in through other methods. Finally, applying online may hurt your chances of getting an interview or proper consideration at a company. You are far better off being evaluated as an employee referral, represented by a recruiter, or recommended by someone known to the company.

Not Being Selective – whether you are actively or passively job searching, BE SELECTIVE. I generally advise people to take initial interviews liberally. Meeting the people and company face to face is the best way to see if there might be a fit. After an initial interview, I suggest people get much more selective. Don’t get deep into the interview process, or take things to the offer stage, if you can’t see yourself working at the company. You’ll not only be wasting your time, but you could leave a negative impression with the people who feel like you wasted theirs.

Not Networking – this is the ultimate job search mistake. Study after study shows that the best jobs, and the best chances of landing your next job lies in networking. Friends, classmates, recruiters, alumni organizations, professional organizations, and former coworkers are just some of the categories of contacts you should tap into when considering a job change. Many people don’t do this because it involves more effort, but it is absolutely worth it!

David Staiti is the founder and Managing Partner of Virtus Recruiting, LLC. He has almost two decades of executive search and recruiting experience. He’s published numerous articles on job search and career management topics for The Wall Street Journal, CareerBuilder, and Forbes.com